Hai mama, ni memang normal lah! Scan dating scan ada margin of error, especially dalam trimester pertama timing scan influence jugak hasil ukuran. Kalau pengiraan based on LMP (last menstrual period) ko 7minggu 5 hari tapi scan keluar 6minggu 4 hari, perbezaan dalam 1-2 minggu tu very normal, so jangan risau ye. A few of us went through the same thing, dan doktor cakap selagi dalam range okay je. Better confirm dengan doktor mo, tapi most likely dia akan adjust the dates based on ultrasound finding je sebab yang scan tu usually lebih accurate dalam early pregnancy. Relax mama, baby developing fine tu yang penting!